Silo.



UNITED sTATEs PATENT oEEIoE. WILLIAM M. PHILLIPS, OF- NORTHVILLE, MICHIGAN..

' slLo..

Specification of Letters Patent.

` Patented March .26, 1907.

Application filed October 9,1905. Serial No. 281,903.

lo all Iii/mln.' it -may concern.'-

Be it known that I, WILLIAM M. PHILLIPS, a citizen of the United States of America, residing at Northville, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Silos, of which the following is a specification, refer-` ence being had therein to the accompanying drawings. p

This invention relates to improvements in the construction of silos; and the object of the invention is tc provide an indestructible structure which will eilectually exclude the air, water, and frost and may be taken down for the purpose of removal or repair with facility. w

To'this end the ing the structure of suitably-formed hollow cement blocks and detachably securing the same in place within the structure by metal hoops or bands, the-blocks being so formed as to make a circular wall, within which is an air-space to prevent the frost from penetrating;

A. further object of the invention is to so construct the blocks that they will be very strong, yet comparatively light, and to provide the saine with means for engaging and holding the hoops, it being also an object of the invention to provide suitably-constructed doors and means for holding the same and to further provide certain other new and useful features, all as hereinafter more fully described, reference being had to the' accompanying drawings, in wliich- Figure lis a side elevation of a silo embodying the invention; Fig. 2, a partial horizontal section of the same. Fig. 3 is an 'enlarged elevation of one of the blocks with parts broken away to show the construction. Fig. 4 is a longitudinal section of a block embodying a modified construction. Fig. 5 and Fig. 6 are transverse sections of blocks em bod ying still further modified forms. Fig. 7 is a detail showing a vertical section through the doors of thc structure. Fig. S is a detail of the means for holding the flat hoop, and F ig. 9 is a similar view showing a modified form of hoop and means for holding the same.

As shown in the drawings, A are coment blocks, which are formed hollow,with thin side walls 1 and edge walls 2 and open at their upper and lower ends. These walls are strengtncned to withstand the outward pressure on the inner ,face of the block when in the silo by a transverse wall 3, formed integral with the invention consists in build-L' A side Walls and extending at an angle to the edge Walls-that is, said wall 3 extends from nearone edge wall at one end of the block diagonally across the space to near the opposite edge Wall at the opposite endof the block`and thus by the use of but one strengthening-wall the side Walls are-strengthened from one edge wall to the other, permitting the use of thin walls and making a very light yet strong construction.

n Fig. 4 is shown a construction of block in which two diagonally-extending strengthching-walls 4 are provided, these Walls converging toward one end of the block, and in Fig. 5 interlocking blocks of this character are shown, each being formed with a longitu- -di'nal rib 5 on one edge and a corresponding groove 6 in the opposite edge. In the construction4 shown in Fig. 6 `the hollow is formed by a series of longitudinal circular holes, one-half of a hole being formed in each edge of the blocks, so that when the blocks are in the wall there will be a continuous series ofequally-spaced holes in the Wall, making a substantially continuous air-space.

Each block is suitably curved transversely throughout its length, so that when said blocks are complete circle of the desired diameter, and this circular wall is built up b placing row upon row -and securing the b ocks in place by placing an iron band or hoop B around the wall overthe jointbctwen each row. On the ends of the band are perforated ears] to receive a clam ing-bolt 8, by means of which tlieends, o the band are drawn toward each other and the band clamped around the wall. The blocks are thus forced into close contact by the band and the joint between the horizontal rows of blocks covered. The rows are preferabl f relative to each other as to breah joints, and

the wall is made substantially airandwater tight by the hoops.

To prevent the hoops from slipping down from over the joints between the rows of blocks, hooks 9 are set when they are molded, or itit is desirable to l use around rod l() in place of the flat hoop a placed in the Wall, they will form a' in some of the blocks i so placed roo recess or groove l1 to receive the rod isv formed by the upper blocks.

A vertical opening C is left in one side of the wall, and this o ening is closed by a se- 'ris of superimposedp doors D, placed against molding a slight .depression along and lower horizontal edges of the 'wardly-extending are placed one upon t e the inner face of the wall over said opening and held in place, edge to edge, by downingers 12 on the lower edge of each door, which fingers embrace the upper edge of the door below. These doors are held tightly against thewall `by -tli'e ensilage pressing them outward, or any suitable locking means may be rovided. The doors other'as the silo is lled up, andthus the opening is tightly and securely closed. f l

' The blocks beingheld' in place by the bands only, the structure may easily taken down for removal or repair at any time, and all of the parts bei ireproof the whole is practically indestructi le.` 'Having th` s fully described my invention, what l claim is- 1 A silo composed of a wall formed of vindezo pendent segmental blocks the adjacent faces be quickly and 84eme of adjacent blockseachbeing rovided with a depression atzthe horizonta outer edges ythereof whereby said depressions will register to form a continuous circumferential groove, clamping-hoops Within said grooves, l said hoo s ,en 'aging each of the adJacent blocks, sai wall eing provided with a vertical dooropening, a series of sheetemetal doors engaging the inner face of thewall and being` disposed with the horizontal edges of abutting doors in engagement .with one anotherf'an Idownwardly-eXte'nding iingers carried by theI lower end of each door to engage the opposite face of the adjacent door.

In testimony whereof I affix my signature in presence of two Witnesses.v

. A WILLIAM M. PHILLIPS.

`Witnesses: i l Trios. S. LoNGsTAFF, OTTvo F. BARTHEL. l 

